David Carmouche, MD
The Shapeshifter
EVP and Chief Medical and Commercial Officer, Lumeris
Last verified November 6, 2026
Overview
Has personally sat on every side of the healthcare table: insurer, health system, retail disruptor, and technology vendor. Designed payer contracts at BCBS Louisiana, ran physician and hospital networks at Ochsner, and led retail health at Walmart alongside an Optum/UnitedHealth partnership. He now holds the top medical and commercial job at Lumeris, which sells AI tools for primary care and value-based care. Lumeris's executive committee page did not list him when checked in November 2026, with no announcement either way. Every career move traces the consolidation of healthcare by the payer-industrial complex.
Since March 2026
What has changed
- April 6, 2026Published a HIT Consultant op-ed, bylined EVP, Chief Medical & Commercial Officer at Lumeris, defending clinician-supervised AI in rural primary care after the debate over Oz's 'avatar' remark. source
- April 23, 2026Medical Economics published his piece on AI extending primary care capacity, identifying him as EVP and chief medical and commercial officer at Lumeris. source
- May 13, 2026Public Citizen review: chief medical and commercial officer at Lumeris; formerly Walmart, Ochsner Health, Blue Cross Blue Shield of Louisiana; a history of donating to Republicans. source
- May 18, 2026At the first HAC meeting he introduced himself as EVP and Chief Medical and Commercial Officer of Lumeris, citing 30 years as a primary care physician and executive roles at health plans, health systems and Walmart Health. source
Career arc
Professional timeline
Current (joined as Chief Clinical Transformation Officer, September 2024)
EVP and Chief Medical and Commercial Officer
Lumeris
SVP Healthcare Delivery
Walmart Health
President
Ochsner Health Network
EVP and CMO
Blue Cross Blue Shield of Louisiana
Private practice physician
Cardiology and internal medicine
Red flags
Conflicts and concerns
Sat on every side of the table (insurer, health system, retail disruptor, technology vendor) with expertise in consolidating each.
Walmart Health partnership with Optum/UnitedHealth was part of UnitedHealth's vertical integration strategy displacing independent physicians.
Value-based care "enablement" makes MA consolidation profitable. Lumeris profits when large systems, not physicians, control patient attribution.
Harvard Business School alumnus: understands financial engineering of value-based care from every angle.
Physician-owned hospitals
Every role has served payer-aligned primary care consolidation. Physician-owned practices and hospitals represent the alternative model to everything he has built. No stated interest in physician ownership expansion.
Sources